import axios from 'axios'
import {Message} from 'element-ui'
import JSZip from 'jszip'
import {saveAs} from 'file-saver'
import {getToken} from '@/utils/auth'
import errorCode from '@/utils/errorCode'
import {blobValidate, parseTime} from "@/utils/ruoyi";

const baseURL = process.env.VUE_APP_BASE_API

export default {
  name(name, isDelete = true) {
    var url = baseURL + "/common/download?fileName=" + encodeURI(name) + "&delete=" + isDelete
    axios({
      method: 'get',
      url: url,
      responseType: 'blob',
      headers: {'Authorization': 'Bearer ' + getToken()}
    }).then(async (res) => {
      const isLogin = await blobValidate(res.data);
      if (isLogin) {
        const blob = new Blob([res.data])
        this.saveAs(blob, decodeURI(res.headers['download-filename']))
      } else {
        this.printErrMsg(res.data);
      }
    })
  },
  resource(resource) {
    var url = baseURL + "/common/download/resource?resource=" + encodeURI(resource);
    axios({
      method: 'get',
      url: url,
      responseType: 'blob',
      headers: {'Authorization': 'Bearer ' + getToken()}
    }).then(async (res) => {
      const isLogin = await blobValidate(res.data);
      if (isLogin) {
        const blob = new Blob([res.data])
        this.saveAs(blob, decodeURI(res.headers['download-filename']))
      } else {
        this.printErrMsg(res.data);
      }
    })
  },
  zip(url, name) {
    var url = baseURL + url
    axios({
      method: 'get',
      url: url,
      responseType: 'blob',
      headers: {'Authorization': 'Bearer ' + getToken()}
    }).then(async (res) => {
      const isLogin = await blobValidate(res.data);
      if (isLogin) {
        const blob = new Blob([res.data], {type: 'application/zip'})
        this.saveAs(blob, name)
      } else {
        this.printErrMsg(res.data);
      }
    })
  },
  saveAs(text, name, opts) {
    saveAs(text, name, opts);
  },
  async printErrMsg(data) {
    const resText = await data.text();
    const rspObj = JSON.parse(resText);
    const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode['default']
    Message.error(errMsg);
  },


  /**
   *多个图片压缩成zip导出
   */
  downloadZip(files) {
    let zip = new JSZip();
    let folder = zip.folder('files');
    let filename = '遥瞰E号-' + parseTime(new Date(),'{y}-{m}-{d} {h}-{i}-{s}') + '.zip'
    Promise.resolve().then(() => {
      return files.reduce((accumulator, item) => {
        let num = item.url.lastIndexOf("/") + 1;
        let fileName = item.url.substring(num).split("?")[0];
        var imgSrc = baseURL + item.url
        return accumulator.then(() => fetch(imgSrc)
          .then(resp => resp.blob())
          .then(blob => folder.file(fileName, blob)))
      }, Promise.resolve())
    }).then(() => {
      folder.generateAsync({type: "blob"}).then(content => saveAs(content, filename));
    })
  }

}

